空穴的英文：
cavity

Exciton is electron-hole pair held together by their mutual coulomb interaction
激子就是由电子和空穴在相互间的库仑力作用下，相互维持在一起的电子--空穴对。

He jammed the material in until the cavity was full
他用力把物料塞进去，直到空穴完全填满。

He jammed the material in until the cavity was full.
他用力把物料塞进去，直到空穴完全填满。

Puppies, no matter what breed, are so little that they can slip through openings and fall.
不管是什么品种的狗，由于他们还小，都有可能从空穴滑落。

The seeping of serous,purulent,or bloody fluid into a body cavity or tissue.
渗出严重的有毒的或血液状液体渗出并流入躯体空穴或细胞组织中

The hole in the tooth is cavity.
牙上的洞叫做蛀牙。

The peritoneal cavity is a closed sac.
腹膜腔是一个封闭的囊腔。

To insert a pack into a body cavity or wound.
塞裹布把裹布塞入人体体腔或伤口

There's a cavity in the boy's tooth.
这个男孩的牙上有一个洞。

The dentist carefully located the filling in the cavity
牙医小心地把填塞的东西放入牙洞里。